<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Bootstrap 实例 - 按钮组的大小</title>
<link rel="stylesheet" href="bootstrap/3.3.7/css/bootstrap.min.css">
<script src="jquery/2.1.1/jquery.min.js"></script>
<script src="bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

	<div class="btn-group btn-group-lg">
		<button type="button" class="btn btn-default">Button 1</button>
		<button type="button" class="btn btn-default">Button 2</button>
		<button type="button" class="btn btn-default">Button 3</button>
	</div>
	<div class="btn-group btn-group-sm">
		<button type="button" class="btn btn-default">Button 4</button>
		<button type="button" class="btn btn-default">Button 5</button>
		<button type="button" class="btn btn-default">Button 6</button>
	</div>
	<div class="btn-group btn-group-xs">
		<button type="button" class="btn btn-default">Button 7</button>
		<button type="button" class="btn btn-default">Button 8</button>
		<button type="button" class="btn btn-default">Button 9</button>
	</div>

</body>
</html>